//
//  ViewController.h
//  20202
//
//  Created by student on 16/3/16.
//  Copyright © 2016年 niit. All rights reserved.
//

#import <UIKit/UIKit.h>
@class ViewController2;

@protocol viewControllerDelegate <NSObject>

- (UIColor *)changebackGround;

@end

@interface ViewController : UIViewController


@end

